Quote:
Originally Posted by
GiTcHaSuM 
The listening area is 15 ft wide and I sit about 8ft from the wall. This particular arrangement gives the area more open space. The area downstairs is about 16' wide and 25' long and the ceiling is angled up starting at the back wall and goes all the way up the the ceiling upstairs. I hope that is a good description. I have my current sub to the left of the TV, the opposite wall of the open area. I am thinking that the mk4 will be just fine, I certainly don't want too much bass if someone happens to be in the downstairs area watching TV as well. if you still need a drawing, I can have that by tonight. I appreciate all of the info and help. Thank you, sir.
You are welcome! Remember that the subwoofer level is set entirely by you. When someone else is downstairs watching TV, you can turn down the bass (use the sub out adjustment on the receiver, or just don't turn the master volume up too high). If it was me, I want to be able to get the bass I want when there is no one else to worry about and enjoy the system. I would not want to compromise so when the situation is right, I regret that I cannot enjoy my system to the full, especially if the cost is not hugely different, and still within my budget. Also, the larger sub will be less stressed at the same listening level, which translates into a more effortless bass (lower distortion), more dynamic (more headroom), and better long term reliability.
Left of the TV sounds good.
Do post the diagram and a plan that shows how the top floor overlaps the lower floor. i.e. which part of the 16 x 25 downstairs is under the 10.5 x 15 upstairs? Also, does the 16 x 25 also has doorways that lead to more areas? If so, how large are those?